ABSTRACT
Tsunamis are generated by seafloor displacement that occurs during earthquakes, collapse of sub-aerial landmasses into lakes or reservoirs, landslides, and volcanic activity independent of earthquakes. An earthquake recurrence interval is an important factor in seismic hazard assessment, but they are often poorly determined. In areas with low deformation rates, mainly intraplate regions, the recurrence and intervals of strong earthquakes usually exceed the time span covered by historical records, so geological records serve the purpose.
